Abstract: This invention relates to a DAS comprising a digital donor interface circuit, an RF donor interface circuit, a first DAS propagation path, a second DAS propagation path, and a radio unit and configured to obtain a first propagation time delay for the first DAS propagation path and a second propagation time delay for the second DAS propagation path, obtain at least one of a time delay of the RF donor interface circuit and the digital donor interface circuit, determine a first downlink time delay value, and transmit the first downlink time delay value to a delay adjustment circuit in a downlink path of the DAS.

Abstract: One embodiment is directed to a multi-transceiver radio frequency (RF) signal processing system. The system comprises at least one processor configured to execute signal processing for multiple transceiver paths and to implement a digital pre-distortion (DPD) core, and a plurality of transceiver paths coupled to the at least one processor. The transceiver paths comprise at least a first transceiver path for a first frequency block and a second transceiver path for a second frequency block. The signal processing outputs a first digital signal corresponding to the first frequency block to the first transceiver path for wireless transmission and a second digital signal corresponding to the second frequency block to the second transceiver path for wireless transmission. The DPD core applies a distortion to the first digital signal and the second digital signal that covers the first and second frequency blocks.

Abstract: This invention relates to a DAS comprising a digital donor interface circuit, an RF donor interface circuit, a first DAS propagation path, a second DAS propagation path, and a radio unit and configured to obtain a first propagation time delay for the first DAS propagation path and a second propagation time delay for the second DAS propagation path, obtain at least one of a time delay of the RF donor interface circuit and the digital donor interface circuit, determine a first downlink time delay value, and transmit the first downlink time delay value to a delay adjustment circuit in a downlink path of the DAS.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to one or more remote units used to serve the first cell. The system is configured to route the downlink user-plane data for processing based on respective evolved Common Public Radio Interface (eCPRI) or Institute of Electrical and Electronics Engineers (IEEE) 1914.3 headers included with the downlink user-plane data.

Abstract: In one embodiment, a multi-transceiver RF signal processing system comprises: a controller; a DPD core and CFR engine; and a plurality of transceiver paths comprising at least a first transceiver path for a first frequency block, and a second transceiver path for a second frequency block. The first frequency block is adjacent to the second frequency block. Signal processing outputs a stream of digital RF based on wireless RF signals received into the first and second transceiver paths. Signal processing inputs a first stream of digital RF and outputs a first digital RF signal corresponding to the first frequency block to the first transceiver path, and outputs a second digital RF signal corresponding to the second frequency block to the second transceiver path for wireless transmission via the at least one antenna. The DPD core applies a distortion that covers the first and second frequency blocks.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data including frequency-domain IQ data and downlink control-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to at least some of the remote units used to serve the first cell. At least some physical layer baseband processing for a wireless interface used to serve the first cell is performed by the virtualized headend or the remote units used to serve the first cell.

Abstract: A communication system having a plurality of multiple input multiple output (MIMO) communication paths with power reduction with is provided. The MIMO communication paths include a plurality of downlink communication paths and a plurality of uplink communication paths. At least some of the downlink communication paths are configured to communicate a same communication signal. Each downlink communication path including a plurality of downlink communication path components. Each uplink communication path including a plurality of uplink communication components. At least one controller is configured to power down at least one of at least one downlink component of the plurality of downlink components and at least one of an uplink component of the plurality of uplink components during at least one power saving mode.

Abstract: Techniques for generating and executing power consumption profiles for at least one node of a distributed antenna system are described. In executing each power consumption profile, the distributed antenna system can operate with reduced power consumption when advantageous while maintaining appropriate capacity and activity during periods of high activity.

Abstract: Techniques related to accommodating multiple delay targets in a distributed antenna system are described. The distributed antenna system is configured to determine at least one equalized delay value for a plurality of remote units based on each of a plurality of delay targets. The distributed antenna system also controls signals transmission times of at least one node based on the at least one delay value so that downlink radio frequency signals are transmitted from each of the remote units with a total delay that satisfies each of the delay targets.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data including frequency-domain IQ data and downlink control-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to at least some of the remote units used to serve the first cell. At least some physical layer baseband processing for a wireless interface used to serve the first cell is performed by the virtualized headend or the remote units used to serve the first cell.

Abstract: One embodiment is directed to an open radio access network to provide wireless coverage for a plurality of cells at a site and that comprises a virtualized headend comprising one or more base-station nodes and a plurality of unified remote units deployed at the site. Each of the unified remote units is able to support multiple functional splits, multiple wireless interface protocols, multiple generations of radio access technology, and multiple frequency bands. The unified remote units and functional split used to serve each cell can be changed (for example, on-the-fly as a part of an automatic or manual adaptation process that is a function of one or more monitored performance attributes of the open radio access network such as network bandwidth, network latency, processing load, or processing performance). The unified remote units can be implemented in a modular manner with a backplane to which different radio modules can be coupled.

Abstract: One embodiment is directed to an open radio access network to provide wireless coverage for a plurality of cells at a site and that comprises a virtualized headend comprising one or more base-station nodes and a plurality of unified remote units deployed at the site. Each of the unified remote units is able to support multiple functional splits, multiple wireless interface protocols, multiple generations of radio access technology, and multiple frequency bands. The unified remote units and functional split used to serve each cell can be changed (for example, on-the-fly as a part of an automatic or manual adaptation process that is a function of one or more monitored performance attributes of the open radio access network such as network bandwidth, network latency, processing load, or processing performance). The unified remote units can be implemented in a modular manner with a backplane to which different radio modules can be coupled.

Abstract: The present disclosure describes devices, systems, and methods for synchronizing multiple-input/multiple-output (“MIMO”) signals or other signals in telecommunication systems. Some aspects may involve transmitting signals between a head-end unit and remote units of a telecommunication system. A first delay of a signal path between the head-end unit and a first remote unit of the remote units may be determined to be greater than each delay of signal paths between the head-end unit and other remote units. Based on the first delay, the telecommunication system may be configured to delay transmission of additional signals such that the additional signals are simultaneously transmitted to another unit by either the head-end unit or the remote units.

Abstract: A service-area repeater for deployment in a service area to provide capacity supplied by a base station located remotely from the service-area repeater includes downlink circuitry to receive, via a donor antenna coupled to the service-area repeater, transformed RF downlink signals transmitted from the base station or a base-station repeater, the base station transforming original RF downlink signals or the base-station repeater transforming original RF downlink signals received from the base station to produce the transformed RF downlink signals. The downlink circuitry includes a signal transformation circuit to de-transform the received transformed RF downlink signals to generate non-transformed downlink signals and a frequency correction circuit to apply a frequency correction to the downlink signals to produce corrected downlink signals. The downlink circuitry wirelessly transmits the corrected downlink signals via a coverage antenna to user equipment in the service area.

Abstract: One embodiment is directed to a repeater system for use with a Fifth Generation (5G) New Radio (NR) base station. The repeater system includes repeater circuitry configured to switch between a downlink mode and an uplink mode. The repeater circuitry is configured to determine basic time-division duplexing (TDD) parameters for a 5G NR cell served by the 5G NR base station. The repeater circuitry is configured to determine timing of 5G NR time-division duplexing of the 5G NR cell based at least in part on correlating a waveform of a downlink signal with one or more of: a 5G NR Primary Synchronization Signal expected to be in the downlink signal as indicated by at least some of the basic TDD parameters and a 5G NR Secondary Synchronization Signal expected to be in the downlink signal as indicated by at least some of the basic TDD parameters.

Abstract: In one example, an integrated relay distributed antenna system includes a relay node communicatively coupled to a base station and a master unit communicatively coupled to the relay node. The relay node is configured to communicate with the base station via a backhaul interface. The master unit is configured to communicate with the relay via an access interface, and the master unit and the relay node are configured to communicate demodulated and decoded data and/or demodulated data with each other. The integrated relay distributed antenna system further includes one or more remote antenna units communicatively coupled to the master unit and located remote from the master unit, wherein the one or more remote antenna units are configured to provide radio frequency signals to a coverage zone via one or more antennas.

Abstract: In one embodiment, a multi-transceiver RF signal processing system comprises: a controller; a DPD core and CFR engine; and a plurality of transceiver paths comprising at least a first transceiver path for a first frequency block, and a second transceiver path for a second frequency block. The first frequency block is adjacent to the second frequency block. Signal processing outputs a stream of digital RF based on wireless RF signals received into the first and second transceiver paths. Signal processing inputs a first stream of digital RF and outputs a first digital RF signal corresponding to the first frequency block to the first transceiver path, and outputs a second digital RF signal corresponding to the second frequency block to the second transceiver path for wireless transmission via the at least one antenna. The DPD core applies a distortion that covers the first and second frequency blocks.

Abstract: In an example, a distributed relay includes a relay node master unit communicatively coupled to a base station; and one or more remote relay antenna units located remotely from the relay node master unit and communicatively coupled to the relay node master unit. The relay node master unit is configured to communicate demodulated and decoded data and/or demodulated data with the one or more remote relay antenna units via one or more transport interfaces, and the one or more remote relay antenna units are configured to communicate radio frequency signals to a coverage zone via one or more antennas. The relay node master unit includes a backhaul interface and an access interface. The backhaul interface is configured to implement communications between the relay node master unit and the base station. The access interface is configured to implement communications between the one or more remote relay antenna units and user equipment.

Abstract: Embodiments of repeater systems (such as single-node repeaters and distributed antenna systems) suitable for use with 5G NR base stations are disclosed.

Abstract: A configurable wide area distributed antenna system is provided. At least one remote master unit of the system is in communication with at least one base station. The remote master unit includes a remote switch function that provides at least multiplexing in a downlink direction, demultiplexing in an uplink direction and routing of digital samples. The local master unit is located remote from the remote master unit. The local master unit is in communication with at least one remote antenna unit used to provide communication coverage in a select coverage area. The local master unit includes a local switch function providing at least demultiplexing in a downlink direction, multiplexing in an uplink direction and routing of digital samples. At least one communication link communicatively couples the remote master unit to the local communication unit with transport media interfaces.